What can cause your breast to discharge?

Breast discharge can be caused by various factors, including hormonal changes, such as those occurring during pregnancy or menstruation, or conditions like prolactinoma, a benign tumor of the pituitary gland. Other potential causes include infections, nipple stimulation, certain medications, and ductal ectasia, where milk ducts become blocked or inflamed. It is important to consult a healthcare professional if you experience unexplained or bloody discharge.